| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small antenna device which can be utilized in a plurality of frequency bands. <P>SOLUTION: The antenna device 1 has: a substrate 11; a radiation electrode 13 which is provided on the substrate 11, and has an open end 13b; a ground electrode 12 which is provided on the substrate 11, and arranged oppositely to each one end in the longitudinal direction and the transverse direction of the radiation electrode 13; and a feeder cable 14 which is connected to the radiation electrode 13 via a feed point 13a. The radiation electrode 13 is arranged such that it is separated from the ground electrode 12 as a first end 13c opposite to the ground electrode 12 approaches the open end 13b along the longitudinal direction of the radiation electrode 13 and such that an angle which is formed by the center line 13d of the radiation electrode for connecting the feed point 13a and the open end 13b, and the second end 12a of the ground electrode 12 facing the longitudinal direction of the radiation electrode 13, becomes an acute angle. <P>COPYRIGHT: (C)2011,JPO&INPIT |
